Armature-core.



J. D. IHLDER.

All-MATURE GORE.

AIYLIOATIOH nun no. a, 1004.

Patented July 4,191.1.

WITNESSES ATTORNEY and its purpose is, to provide a ventilated 5 Referring to the drawings, Figure l, is a B View in side elevation, showing one of. the

UNITED sTATnsriur NT o-FFIoE.

ARMATURE-CORE.

996,927. p ifi a n of L t Patent, Patented July 4, 1911.

Applicationfiled December 8, 1904. Serial No. 236,053. TOME whom it may concern: the bottom. The center of each disk is cut Be it known that I, JOHN D. IHLDER, it away as shown at 14 to lit a part of the shaft citizen of the United States, residingat New 1m one or more keyways 15 are pro- York city, county of New York, State of videdt-o fit over a feather or feathers on the 5 New York, have invented certain new and shaft 1].. A series of slots 16 is formed useful Improvements in Armature-Cores, of through the surface of each disk. The outwhich the following is a specification. side disks 24am substantially the same as y invention relates to armature cores those just described but it is preferable to such as are usedin dynamo-electric machines make them of thicker material for the purpose of strengthening the structure; At one or more places in the core are inserted spacing disks 13 the construction and purpose of which will be fully set forth hereinafter. The disks may be fastened together in any of thewell-lniown ways. A commutator 12 is also shown aflixed to the shaft 11, but it forms no part of this invention.

The spacing disks 13 are usually made by taking a disk iike those already described but with the slots 20 cut deeper and with the teeth .18 instead of the slots 20 made with 'mrallel'sides. Fig. 5 is an enlarged view of a portion of a disk 13 showing the shape of the teeth and slotsjust described. The outer portion of each tooth 18 is then turned or twisted around 90 so as to he at right angles to the plane of the disk. Thent-hey are in .the position shown at 19 in Fig. (i. This isalso shown clearly at 19 in the sectionalviews Figs. 4, 8 an: 9. These spacing disks also have the openings 16 made in them in the same relative. position as are the openings 16 inthe disks 23. Buttons 17 may be provided on the. spacing disk 13 as shown in Figs. 3 and 4. They are attached -to both surface. of the disk and are of such thickness that'tile combined thicknn-ss of the two buttons and the disk is the same as the width of the teeth 19. v

hen the core is asseiilhled the openings 16 will form longitudinal passages through it sothat the core ispartiallyhollow. The spacing disks 13 hold the laminations apart core of improved construction.

I will describe a core constructed accord ing to my invention and point out the novel features thereof in claims.

side elevation of an armature core constructed according to my invention. Fig. 2 is a view of a portion of oneof the disks of which the armature is built up. Fig. 3 is a lar e spacing disks, and also a superposed dis of smaller diameter. Fig. 4 1s a sectionalview of a portion of an armature core where the disks shown in Fig. 3 are used, and the section being takenthrough the line A-B ofFig. Fig.3 and 6 are enlarged views of apart of one of the large disks shown in Figs. 3an-d 4; F i v 7 is a view in sideclevation' of one of the smaller or auxiliary spacing disks, which may be, used in conjunction with. the large disks. Fig. 8 is a sectional view of one form of my invention in which the large s nae-ing disks are em ployed. Fig. 9 isa. rag-mentally sectional view-showing the use of a plurality of spacing disks of successively decreased diameters.

Like characters of reference designate similaii' pa-rtsfiin all .of the figures.

The armature core showrrin Fig. 1 comprises a number of disks 23 of suitable m terial, such as soft iron mounted upon a ;haft 11 in the usnallna-nner. The outside lisks 24 are. referwbly made ofthickerma- :eria'lth-an the others. These disks may be :lotted on their outside; peripher in the velliknownway-forthetpurpose. forming ongitud inal i. g mme. in thejfinished core nto which wass or electrical conducars may. be; plfie edi. E" Qis a partial View i one of: iikate Win a preferred arm. illreperiph ery-is formed into alterate meth 18 andkgroeves 20. The sides of- |e grooves are usuallyniade paralleLso that my are/of the same vii that the top and vision is thus made for the passage 'of air 1Q' throu il the core so that it is effectually ventilated. The twisted teetl 19 rest upon the teeth 18 of the armaturefdisks as shown in Fig. 8 so that they do not interfere with the slots inthe corewhich receive. the electrical conductors. Tlldblli'I-Olis 17 which are sometimes added to the spacing disks; 13- also serve the purpose of holding the armature disks fixed 'distanceapart and When used tend-to make the structure more rigid. 1

at one or more places on the core and prol The auxiliary spacing disks 21 shown in Figs. 3, 4 and 7 of the drawing are some times used in conjunction with the main s )acing disks 13. The outside diameter of these auxiliary spacing disks is practically equal to the diameter of a circle whose circumference is indicated'b the outer row of buttons 17 and it is inten ed to pot on auxiliary disk inside the main disk. When the armature core is of large diameter several of these auxiliary disks maylbe employed, (Fig.

9) each ot'smailer diameter than the-other and fitting within the circumference Ofotl given circle as above indicated. In this manner the spacing disksv and core disk'sare prevented from buckling and the ventilating spaces are kept open.

I have described the above means foreonstrncting a ventilating armature as applied to an armature core of a specific'form, but it is applicable also to other forms whereever it is desired to-provide means for ventilation and. circulation of air.

Obviously. thoseeskilled in the. art/may niake variouschanges in. the details andarrangtancnt of parts witl'iontdeparting from the spirit and scope of my invention, and I desire therefore not to ,be limited to the pre-. cise construction herein disclosed. l ll aving thns fnlly described my invention, what Lclaim and desire tohave; protected by Lettersflatent of the United Statesisw- 1. In an armature core for dynamo-electric nntehines the combinatioltof laminations, and, a plurality of spacing disks of successively reduced, diameters located adjacent. each other and haring their opposing faces separated by air spaces. y

2. in an armature core fordynamo .electric nnichines, the combination of. lam-ina- (ions, and spa-icing inenibers oi successivelye tlt'tl'tihtt l vtiilzbfl said spacing members llLlYl 'ing laterally projecting portions iii-mung; contact will} each other bnttloldingtheir body portions spared aparh it. In an armatl n'e uored'or coinparatii'ely. large dynaniurel ectric mac-bin s, the -con1b1- nation of a plurality of disltmjand aipluiality ,olf spaciine, disks of;.diiicrent diamrters and each having later-aliy projecting teeth. 4. An arn'iatnl,

usual desksa gal a some ol lhe men 'i'errnt diangelacrs pro ride-d nait l lags )rojec'ting laterally, from the plaiiie oli suriace. I 1 Aiirar natu ;oo :e,-havingaeh ks, imlfwa u ili r e s d 'a hi 'h' re-.ef 'di 'erent 6011f the members- I p w cpre provided with the plural ty of HpnUlUg-fllSkS,

anal

hers .oi which are ;-cli-.ili.t--- from the others, aind each as? senior I others aadzcach. pfip vided" with teethtii /isted eqmeto BIBZOEOQL projecting edge from the plane of 1* sur' face. I; i (i. la armature 'core having the usual disks, and a plurality of spacing disks, several members of which are of successively reduced diameters, and each having lugs proti ecting laterally from the surface of sue 1 spacing L'l'ISkS.

'7. in an armature for dynamo electric .i-i-iaehii'ies, the combination with the usual lalnilfations, of a spacing disk'of the size of said laminations or nearly so and comprising laterally projecting t'cet-h, and an addiional diskof smaller diameter and having 'th said first lateralprojcctionsin contact wi named disk.

8. The combination with laminations, of a spacing disk lia vingflateral projections, a smaller spacing diskhaving projections in contact with said first-named s acing disk, and spacing buttons located etween the body portions of the larger and smaller disks. 9. ilhe! combination with acentl'al spacing disk .for laminations of an armature core, of spat-ic disks of reduced diameter on opposite sidesnof .mid central disk and proi'id'ed with .pdrhherai lateral projecting spaeiln teeth, and spacing .lugs between the centra disk and the/disk on'either side of the-saint;

i 10. The combination with a spacing disk for the armature of a con'iparatively large .dynanrwelectric n1acliine,.'saidspacing disk havin peri -literally and laterally 4 project- -1ingteeth;pfuausccoml spacing disk of redni-ted diameter and ha ring peri -Jlierally and laterally praise-lingteeth in contact with yblm lltlt l)qalll ilt-lll of said lira-named disk, and spacing: devices between said disksl-0 a-atlrd neaiwr lllt! axis-militia. armature than .said s m1'|l|g.:tcetl\. all. The con-Im tation .w-it-l'i a spacing disk 'i t- 'l" a isonflnu'atii'rly, iar-go armature of -n. tl \=ii-.nim..-'cl,tattric machine, M'- a-spacing disk all .retluced tlialnclcnantl having peripheral rilfitt'lllgfialilttalllilfriayeonlact witl ithe body portion at said lirst nanied disldf and spam 110 Y i in; la rllens :Ior Jugs; l bot-ween :ssnlsdasks n1- side the.scircamferences. fifik-iiil'iaflwliifliel'al .eriaacijag lneinbel'S...t-n.-.gz .nm: 10:: as fia The vieinnhiitatioaiaeziiill ttlaenmi'mil hnni malionsaaf afe-ore fon'dymaqilbseleet j'cema tiihinis sbfi;xaaspagiingsdisk them-ion. ping ilnttraltmtiaiste l,;.p ri )laenal 'teethfand awe maiiiliaa awaiting A i'SiiSnQflflil ha'vingr tally: the atett iwojiietiing'atecth the 51min:paetidmbfi in contact am a Wm H g Witaeaeasayse a game liuaaaeitllt Bataan,

lam nar-1 .05;w 

